Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Heidi Allison Wilken Wallace, LCSW

Clinical Social Worker in Walnut, IL · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1528107471

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Registry record

Entity type Individual (Type 1)

Name Heidi Allison Wilken Wallace

Credential LCSW

Sex Female

Practice address Walnut, IL, 61376

Phone (815) 383-7277

Fax (815) 379-2184

Enumeration date Feb 6, 2007

Last updated in NPPES Nov 19, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149012947 (IL) Primary

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License HW49060306P (IL) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
HW49060306P	Other	IL	EARLY INTERVENTION

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Heidi Wallace practice?

The practice location on file with NPPES is in Walnut, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Heidi Wallace?

The National Provider Identifier (NPI) for Heidi Wallace is 1528107471, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-19.